Postcard DE-8538301 iki156 Germany 13 Sep, 2019 31 days 3,962 miles Margaritah Russia 14 Oct, 2019 Loading map... iki156 said: posted over 4 years ago This is the so-called Blautopf - the source of the River Blau - in Blaubeuren, which flows into the River Danube in nearby Ulm in southern Germany. The colous are not photoshopped - they really look like that. You need to sign in to leave a comment!